Added usage of ScreenContext in EulaScreen.

chrome/browser/chromeos/login/screens/eula_model.h

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_MODEL_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_MODEL_H_
+
+#include "chrome/browser/chromeos/login/screens/base_screen.h"
+#include "url/gurl.h"
+
+namespace chromeos {
+
+class BaseScreenDelegate;
+class EulaView;
+
+// Allows us to get info from eula screen that we need.
+class EulaModel : public BaseScreen {
+ public:
+  explicit EulaModel(BaseScreenDelegate* base_screen_delegate);
+  virtual ~EulaModel();
+
+  // BaseScreen implementation:
+  virtual std::string GetName() const override;
+
+  // Returns URL of the OEM EULA page that should be displayed using current
+  // locale and manifest. Returns empty URL otherwise.
+  virtual GURL GetOemEulaUrl() const = 0;
+
+  // Called when accept button was clicked.
+  virtual void OnAcceptButtonClicked() = 0;
+
+  // Called when back button was clicked.
+  virtual void OnBackButtonClicked() = 0;
+
+  // Initiate TPM password fetch. Will call actor's OnPasswordFetched() when
+  // done.
+  virtual void InitiatePasswordFetch() = 0;
+
+  // Returns true if usage statistics reporting is enabled.
+  virtual bool IsUsageStatsEnabled() const = 0;
+
+  // This method is called, when view is being destroyed. Note, if model
+  // is destroyed earlier then it has to call SetModel(NULL).
+  virtual void OnViewDestroyed(EulaView* view) = 0;
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_MODEL_H_